In short, 204-pin small outline dual inline memory modules (SODIMMs) are the form factor used to provide DDR3 memory modules for notebook computers and other small form factor computing platforms. 204-pin SODIMMs are currently available in PC3-8500 (DDR3 1066MHz) speeds. To use DDR3 memory, your system must have both a 204-pin SODIMM slot and a chipset that supports DDR3 memory. A DDR3 SODIMM will not fit into DDR2 or DDR memory sockets.
(Information about which memory technology your system uses is included in the Crucial Memory Advisor tool). SODIMMs are smaller and thinner than regular DIMMs, and the 204-pin SODIMM PCBs are always 2.6 inches long and are usually around 1.18 inches high (though the heights can vary slightly). They consist of a number of memory components (usually black) that are attached to a printed circuit board (usually green). The number of memory components on a 204-pin SODIMM's printed circuit board (PCB) can vary, but the PCB will always have 102 pins on the front and the back both, for a total of 204 pins. The gold pins on the bottom of the SODIMM provide the connection between the memory module and the memory socket. Memory Memory Speed 1333MHz MHz Designation PC3-10600 Pin Configuration 204 pins CAS Latency CL9 Memory Type DDR3 Memory Size 8192 MB Number of Modules 2 module(s) Module Size 4096 MB Memory Package SO-DIMM Bus I/O Configuration Unbuffered Error Correction Non ECC Electrical Voltage 1.5 V Physical Form Factor 204-Pin SO-DIMM Module Width 6.67 cm Height 3.0 cm Key Features Memory Modules Kit Size 2 Memory Standard PC3-10600 Memory CAS 9 Memory Voltage 1.5 V Individual Module Size 4096 MB Item Details Manufacturer Crucial Manufacturer Code CT2C4G3S1339MCEU UPC 47 Condition New.